Okay, I'm nearing completion of my Apartment Home Theater, Operation: Acoustic Absorption, and thought I'd better clear it with the experts before I go further. I've been scouring website and forums to learn as much as possible about DIY acoustic panels, and would like to do a little webpage detailing my lessons, but I still have a couple questions before I finish that I think this group could help withmany thanks in advance.
(Please see attached pictures and diagrams below. Any picture requests will be speedily honored.)
The pictures show the panels in my messy living room just lying around before being mounted (screws and drywall anchors). The diagrams show where I'd like to mount the panels (in blue). The only panel not shown will be mounted on the ceiling at the first reflection point. More in my Gallery
My questions are numbered for convenience in referencing.
1) Would you change anything with the positioning of the panels, especially on the front wall? Is the number too great on any one wall, should they be moved to a different wall or the ceiling? Is the ceiling worth the trouble of hanging a panel?
2) I need to cover the panels with fabric yet. I've heard light weight, natural fibers, non-shiny. I want to do muslin, but am having a hard time getting it past the aesthetics committee. Anything else to look for? I'm worried about keeping the fiberglass face acoustically un-obscured, especially with the layer of poly fill on there already.
3) For horizontal mounting, though these are pretty light, I'm thinking I should run a 24 dowel across the middle as a brace. They will be mounted at a single point in the middle of the 48 dimension. Anyone have problems with frames warping?
Note: I currently have no sub but am planning on getting an Athena AS-P300 very soon (unless someone want to sell me an AS-P400 for around $160 shipped.)
4) For the frames straddling the wall corner as bass traps, am I wasting my time using only 2 703? Should I instead move those panels to a location on the wall to further help with flutter echo (I'm still failing the clap test)? I could try to tame bass nulls and peaks with a Behringer Feedback Destroyer instead.
5) On another corner bass trap note, should I load the empty space where the bookshelves meet in the corner with something (fiberglass/cinderblocks)?
The panels are 2x24x48 unfaced OC 703 with a thin layer of poly quilt batting on the front/back in a 3/4x2.5 frame.
Speakers are JBL Studio series (s38ii and S-center). JBL N24ii surrounds. No subwoofer, yet, looking to buy an Athena AS-P300.
Room is approx 14x15', 8' ceilings, medium-thick carpet on floor.
To measure effect, using a Radioshack Digital SPL Meter w/ Room EQ Wizard and built in laptop soundcard.